Fig. 9

Eaux Froides Fault (595993/132335; for location, see Fig. 2) a Les Audannes: onlap of the Upper Cretaceous and Tertiary sequence onto Lower Cretaceous rocks (i.e. Schrattenkalk and Tierwis Formations). Folds are related to the Alpine history, whereas slumps in the Amden Formation are Late Cretaceous soft sediment deformation. b La Selle (593990/131492): a slice of Schrattenkalk Formation is preserved in the footwall of the Eaux Froides Fault. Later, this slice is covered by a thin (about 1 m thick) veneer of Seewen Formation pelagic limestones. Amden Formation marls and slumped limestones onlap the resultant palaeo-escarpment (yellow line). Violet lines palaeo-fault. c Panoramic view of the fault from the Sublage. The geometry of the fault (violet dashed line) is modified by later deformational events, because the Zemenstein Formation is preferentially reused as a decollément level during Alpine deformation